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CBSE Class 11-science Answered

Give importance of velocity time graph and displacement time graph.
Asked by Tanya Singh | 19 Feb, 2012, 11:12: PM
answered-by-expert Expert Answer

a car moving with a constant velocity is a car with zero acceleration.

If the velocity-time data for such a car were graphed, then the resulting graph would look like the graph at the right. Note that a motion described as a constant, positive velocity results in a line of zero slope (a horizontal line has zero slope) when plotted as a velocity-time graph. Furthermore, only positive velocity values are plotted, corresponding to a motion with positive velocity.
 
Position time graphs
 

consider a car moving with a constant, rightward (+) velocity - say of +10 m/s.

If the position-time data for such a car were graphed, then the resulting graph would look like the graph at the right. Note that a motion described as a constant, positive velocity results in a line of constant and positive slope when plotted as a position-time graph.

Now consider a car moving with a rightward (+), changing velocity - that is, a car that is moving rightward but speeding up or accelerating.


Answered by | 20 Feb, 2012, 01:02: PM
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